Data centers in Loudoun County, Virginia

Upcoming: Board scheduled to take up agenda item 14p, the resolution to pause consideration of legislative data center and substation applications. The pause would not take effect unless the Board adopts the resolution (DataCenterFeed, citing the county). Date per DataCenterFeed; confirm on the Board agenda.

Upcoming: Board scheduled to take up agenda item 14p, the resolution to pause consideration of legislative data center and substation applications. The pause would not take effect unless the Board adopts the resolution (DataCenterFeed, citing the county). Date per DataCenterFeed; confirm on the Board agenda.

Agenda item 14p, a resolution to pause Board consideration of legislative applications for data centers and substations for up to 12 months (effective date written as Sept 15, 2026), was removed from the Oct 20 business meeting agenda and deferred to Nov 17 to give the County Attorney time for more legal and fiscal analysis (Loudoun Now; county agenda item description).

Board tabled, without a vote, a proposal to end grandfathering for pending data center projects and a companion motion for an outside audit of them. Bisnow reports 15 projects totaling about 10.5 million sq ft in 30 buildings are advancing under the legacy exemption; FOX 5 DC reports the County Attorney warned that ending grandfathering could cost the county up to $60 million in litigation (figures differ from the county's Sept 16 release, which cited at least 17 cases).

Scheduled: Board was set to receive County Attorney legal analysis on whether the 2025 grandfathering exceptions for pending administrative data center applications can be ended (per the Sept 16 release, which says at least 17 land use cases covering more than 11 million sq ft are grandfathered). [Unverified: the outcome of the Oct 6 item was not found.]

DEQ's list of issued air permits for data centers shows registration 74321-2 (Article 6 - mNSR) issued 2026-09-28 to Belmont Innovation Campus in Loudoun County. The list gives no project size or status; the entry says nothing about whether the facility is built.

Board voted 7-1-1 to pause Board consideration of certain legislative applications for data centers and substations, advancing a proposal from Supervisor Briskman; a separate 7-1-1 vote approved an exception for 'grid reliability' substations. Per the Supervisor's Sept 16 release hosted on loudoun.gov, the pause takes effect immediately; County Attorney advised a blanket moratorium is not allowed. Later coverage says the formal resolution had not yet been adopted (see Oct 20 record), so whether the pause is in force is described differently by different sources.

DEQ's list of issued air permits for data centers shows registration 74265-3 (Article 6 - mNSR) issued 2026-08-13 to Yondr Data Center in Loudoun County. The list gives no project size or status; the entry says nothing about whether the facility is built.

DEQ's list of issued air permits for data centers shows registration 74150-3 (Article 6 - mNSR) issued 2026-07-29 to Amazon Data Services, Inc. IAD-114 IAD-115 in Loudoun County. The list gives no project size or status; the entry says nothing about whether the facility is built.

DEQ's list of issued air permits for data centers shows registration 74302-1 (Article 6 - mNSR) issued 2026-07-15 to Amazon Data Services Inc - IAD-243/244/290/291/292 in Loudoun County. The list gives no project size or status; the entry says nothing about whether the facility is built.

DEQ's list of issued air permits for data centers shows registration 74063-5 (Article 6 - mNSR) issued 2026-07-07 to Amazon Data Services, Inc. IAD-51 IAD-56 IAD-88 IAD-89 in Loudoun County. The list gives no project size or status; the entry says nothing about whether the facility is built.

DEQ's list of issued air permits for data centers shows registration 74205-4 (Article 6 - mNSR) issued 2026-06-16 to Amazon Data Services Inc IAD-120/121/122 in Loudoun County. The list gives no project size or status; the entry says nothing about whether the facility is built.

DEQ's list of issued air permits for data centers shows registration 74252-2 (Article 6 - mNSR) issued 2026-04-06 to Amazon Data Services IAD-215 in Loudoun County. The list gives no project size or status; the entry says nothing about whether the facility is built.

DEQ's list of issued air permits for data centers shows registration 74308-1 (Article 6 - mNSR) issued 2026-03-23 to Digital Filigree LLC in Loudoun County. The list gives no project size or status; the entry says nothing about whether the facility is built.

DEQ's list of issued air permits for data centers shows registration 74335-1 (Article 6 mNSR) issued 2026-03-20 to SDC Ashburn I - SE Parcel Campus in Loudoun County. The list gives no project size or status; the entry says nothing about whether the facility is built.

DEQ's list of issued air permits for data centers shows registration 74337-1 (Article 6 - mNSR) issued 2026-03-20 to Amazon Data Services Inc IAD-170 in Loudoun County. The list gives no project size or status; the entry says nothing about whether the facility is built.

DEQ's list of issued air permits for data centers shows registration 74323-2 (Article 6 - mNSR) issued 2026-03-16 to Amazon Data Services Inc IAD-180, IAD-181, IAD-182, & IAD-183 in Loudoun County. The list gives no project size or status; the entry says nothing about whether the facility is built.

DEQ's list of issued air permits for data centers shows registration 74269-2 (Article 6 - mNSR) issued 2026-02-11 to STACK Infrastructure Data Center - SI NVA06A LLC in Loudoun County. The list gives no project size or status; the entry says nothing about whether the facility is built.

DEQ's list of issued air permits for data centers shows registration 74296-1 (Article 6 - mNSR) issued 2026-01-20 to Kincora Data Center in Loudoun County. The list gives no project size or status; the entry says nothing about whether the facility is built.

DEQ's list of issued air permits for data centers shows registration 74284-2 (Article 6 - mNSR) issued 2026-01-05 to Vantage Data Center VA3 LLC in Loudoun County. The list gives no project size or status; the entry says nothing about whether the facility is built.